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ZL3AI > APRDIG 14.08.06 01:52l 78 Lines 3030 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 26 #11, 3/3
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From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Message: 17
Date: Fri, 11 Aug 2006 18:01:38 +0200
From: Arne Stahre <sm6vyf_at_gatugarden.com>
Subject: Re: [aprssig] APRS web messaging
Yes, it's possible to use a web page for APRS messaging. I made such an
application about five years ago. I used Apache, Perl, and Linux. I didn't
use it much and would probably do it differently now, but I remember it as
working. It didn't do any authentication, since I ran it on my local
computer.
It's about 12kbytes of source code - old, undocumented, perl code...
73 de SM6VYF/Arne
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Message: 18
Date: Fri, 11 Aug 2006 09:02:43 -0700 (PDT)
From: "Tyson S." <timbercutter_at_yahoo.com>
Subject: [aprssig] KPC+ and uiview and GPS
I am trying to run uiview and a KPC3+ and a GPS all on one serial port, is
this possible? I tried a USB to serial converter but the laptop keeps
crashing and locking up with the thing plugged in. I heard that you can use
a special cable and run everything through the one serial port but I do not
know how. I am using KPC-3+ with version 9.1 software.
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Message: 19
Date: Fri, 11 Aug 2006 09:58:01 -0700 (PDT)
From: "Curt, WE7U" <archer_at_eskimo.com>
Subject: [aprssig] Re: [nwaprssig] KPC+ and uiview and GPS
On Fri, 11 Aug 2006, Tyson S. wrote:
>I am trying to run uiview and a KPC3+ and a GPS all on one serial port,
>is this possible? I tried a USB to serial converter but the laptop
>keeps crashing and locking up with the thing plugged in. I heard that
>you can use a special cable and run everything through the one serial
>port but I do not know how. I am using KPC-3+ with version 9.1 software.
It's called an "HSP" adapter. You can build your own. I did. I wouldn't
recommend using one though. The idea is that the computer application
switches the computer's RS-232 receive line between two serial ports, using
a handshake line on that port to control it.
Some APRS applications know how to do this, doing the HSP switching to get
the data from a GPS periodically. The rest of the time they're receiving
from the TNC.
The reason I wouldn't recommend HSP is that the computer doesn't know when
you're in the middle of receiving a sentence from either device, resulting
in some garbled APRS and GPS sentences getting received by the computer.
You'll also miss any APRS packets that come in while you're listening to
the GPS unless the TNC holds off sending characters during that time due to
the handshake. You'll still chop up sentences at the switchover points in
any case though.
--
Curt, WE7U. APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
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